Unsure if you got that AMP Cache URL right?

2. Load your cached AMP page in a browser

It’s that simple.

Most people who understand AMP—beyond the typical “AMP is like faster mobile pages, right?” generic responses—will tell you that this is really all you need to do. The AMP cache updates when you complete this step. And for the most part they’re right.

Google’s documentation goes on to say…

The Google AMP Cache automatically requests the latest version of the AMP document from its origin…and serves the updated version to the next user.

There it is.

That means that when you load the AMP Cache URL directly, that forces the cache to update, even without the more “urgent” update ping method. No special command to run via an API somewhere. Just load the URL in a browser.

But there’s a catch.

3. Visit again in new tab, browser, or device

The cache will be refreshed but the new AMP page will be shown to the next user, not to you. This is what “stale-while-revalidate” means.

There’s an easy workaround, obviously. Make sure you ARE the next user. Just close the tab and reopen it, or access from a different browser/device, and you’re all set.

Google considers a document “fresh” for at least 15 seconds after it’s uploaded or edited, which means they won’t refresh the document until after that 15 seconds is over.

So be patient.

Meanwhile, on the internet

There’s some discussion on this topic at StackOverflow that may benefit readers of this blog too.

User Dan Dascalescu’s answer is actually not the accepted “correct” answer, but it probably should be.

The accepted answer is wrong.

It says “no, there is no API to force a new copy of an AMP page in the Google CDN.” But that’s untrue, as we’re learning in this post and in Google’s documentation.

And the StackOverflow community knows it.

The green checkmark means it’s the “accepted” answer (marked by the author of the question). But the -1 means the rest of the StackOverflow who’ve voted on the answers know what this answer is junk.

Need a hand?

If you’re struggling with Google AMP, updates to the cache, removing your URLs from the index, or any of that, we can help!

Bonus: DO NOT remove AMP URLs.

Unless you’re 100% sure that’s what you want to do, it’s a bad idea to remove your AMP URLs from the cache. If you do remove them, be very careful.

Again, Google says…

Important: Removal of content from the Google AMP Cache will not immediately cease traffic flowing to removed content, which may result in user-facing errors such as 404 or 500.

That’s a big deal. And there has been plenty of discussion about it since AMP came out (that post has 70,000+ views).

Screenshot borrowed from shkspr.mobi.

Why? What’s the problem?

Well, it turns out that once your AMP pages are in the index, Google seems reticent to let go of them.

The documentation says clearly that even if you update ping remove them, they still take some time to disappear.

And even once that happens, the AMP error page links to the old, now-invalid /amp URL, returning a 404.

For example, Google Search may link to the AMP versions of pages even after you use “update-ping” to remove the page from the Google AMP Cache because the index still indicates that an AMP page is available and may take time to become aware of the removal.

Yes, you can add a redirect in your htaccess or with a plugin, but it shouldn’t be the author’s job to fix AMP’s mistakes.

AND, as pointed out by @edent in the link above, you have to run update ping individually on every URL. For some sites, that’s thousands of one-at-a-time update pings.

No thanks.

The smart money says stick with AMP unless you have good reason not to.

So should I update my AMP pages or not?

Yes. The WordPress AMP plugin is a good start, but it’s lacking some important things like style options, social sharing buttons, and a link to the non-AMP version.

We’ve already had to retrofit some of our clients’ websites with those features because the AMP plugin isn’t good enough.

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